CBS won the night among key demographic, NBC won night in total viewership

CBS' "Big Brother," which featured special guest Kathy Griffin, won the television ratings battle Wednesday night among the key 18-to-49-year-old demographic and boosted the network to No. 1 in the desired category.

With a rating of 1.3, NBC tied for second in the key demo with Spanish-language network Univision.

Roughly 9.1 million people tuned in to "America's Got Talent" to see which acts would move on to the semifinals. With a rating of 1.8 among the key demo, the Nick Cannon-hosted show was down 5% from last week but was still the most viewed program of the night.

Sixteen years after SpongeBob SquarePants first appeared on television, the yellow animated character made a splash on the big screen this weekend with the release of "The SpongeBob Movie: Sponge Out of Water."